Heater and drier.



Np. 887,906. PATENTBD MAY 19, 1908.

H. W. ASH.` f HEATER AND DRIER.

` APPLICATION FILED TUNE 10.1905.

2 SHEETS-SHEET l.

' PATENTED MAY 19, 1908.

H. W. ASH.

A HEATER `AND DRIBR.

APPLICATION FILED JUNI: ivo. 1905.

2 SHEETS-SHEET 2.

this pisse of use ORAGE W. ASH, Oly SGB'lERVlLLE. MSSMHUSETTS. SSIGNOH T() Vv'l-lREN BRGTHERS *m N L stierf'. ffr-Trr-rf i ll t" COMPANY, UF Ul-KARLESTGN, WEST VlRGlNlA, A CORPORATION OF WEST VIRGINIA.

No. senses.

- Specification of Letters Patent.

Fatented Mey Q, 5.9055'.

Appiiefition ses June in, i905. semi No. 26eme.

To all whomv it may concern.'

it known that l, liessen: W. Asis, oi Somerville, iii tie county el Middlesex end State oi ltiesseeliu-setts, e citizen 0i the Vim 4. "1. Y tmJtedbtstes/l te invented e n ee'end Lise/tui liiiprevemeiit iii end Dr' s, et

which tlie follewhig is e. full, clear, sied exact description, rete 'being lied to seeempaiiyiiig drs ings7 iorriiiiig e tliis specification, in explaining its rieture,

lily i-npf'eiitieri relates especially to e perteble heating end drying devies for lieetiiio' and drying smell storie, gravel, sarfL, ses. other iiztteriel. l

fin the iiisriuieeture ef certeiii kinds pevenients it is te dry and to heet some el the iiieteries er iiieredieiits used. is their composities, arid it is desire-ble that such drying and iieetieg should be eerried en es meer the pleine oi. filial use possible, Pls eeiistsiitly changing, it is lift/ring sind heating eviee be eesiiy per*- it iiecessery for this kind et Werl Lsoj glie/t the device be simule oil' strueture, of reletitrely large eitpeeiiy, and oi suiiicieiit strength to Withii eeessery tliet ste-nil tl'ie lisrd usage to which it is eerily subjected. it is also desirable tliet the device be easily repaired and by perts which ere iii cemriioii use and easily eb teiied and so that the device indy be repaired ori the spot or without removsi to e repair sliep. tleretofore tlie devises ceiiiiiieiily* used for this purpose here been imsetisiectory for many reasons, ii/"liieli it not be iieeessery te ste-te here.

ln order that strength may be secured l have employed e. structure lergely composed of erigle iron md sheet iron combined es will be hereinafter specified.

To secure e quick, continuous and imi ferm heating ei the ingredients l lieve used e ferm oi structure which permits tlie ingred lents te be ied in et the top, ielivered et the bottom, end in their movement from the top to the nettoie te be brought into contest with lieetiig surfaces disposed to cause the materiel to be brought into contact Witli tlieiii es it tells.

Te parts, lieve caused such portions of the device es ere likely to need renewal, Viz,-tlie lire brick and the heating tules7 to be reside 0i such brick and el such tubes essere in erniit ei the immediate renewal of' 'Common use and lieve else ceused them to be secured to their supports inc the device ir; such e. manner es to .53e eesiiy end quickly removed end replaced. l lieve else so devised the structure tibet the drie-d sed heeted rneterisl may readily be removed from either side of it end that pending; removal it may be held therein Without liability et Weste by e scee-e.

l will new deserilbe the iiiveritioii in detail in conjunction with the dre-Wings 'forming e part of this speeiiieetion Wlieref Y l Figure l is e, lengiiudisel section. Fig.' 2 is e cross section, and Fig. 3 is e, front elevetien.

ln order that the drying end heating device iris-y be portable it is mounted upon two axles It, ./fii* of which the forward A is some- 'what lewer tlieii the reiir eue A1. The smiles are located preferably es ter spart es possible Y in order to provide te the drier from its sides.

The drier comprises 'tw-e parte, viz.,-the furnace end the drying chamber The iiiriieee is et the insel er reei of. the drying ehemlier and from it there extends threugli the drying elieriibei te e tlue D iii front et tlie dryig @hesiter the lines ei tubes E, El end EE. lzlroiri the due D there extends te the 'flue D1 over the furnece sild et the rear si the dreiig chemlier the ines ot tubes E3 end E". The' products of combustion thus pass im Werd freni the furnace B through the pesseges iis the tubes l5, El end E2 te ,the liue D, thence upward iii seid Elue end thence beek- Werd threugli the pssseges irl the tubes E3, E4 to the flue El from whence they esce e to the atmosphere threugli en opening et trie top ei the flue. l t

The lines of tubes are arranged with respect to eeeli other es represented in 2 and se tliet tlie tubes et every two lines occupy e staggered relation, the tubes et every other line preferebly being in the seme vertical plaines. The number of tubes in the two `lower lilies preferably is smaller than the number in the third line in order that there may be introduced into the drying chamber,

meer its bottom side ti/elise, c1 which are inclined from the Vertical side Walls c2, c3 m- Werd. The lower ends of these inclined Wells end et e suitable distance above the bottom e' of the chamber and they are seperated from each other suiliciently tc form an eutescape of the material from tne let c to the bottom c4, and their inclined survfaces cause the material passing through the chamber adjacent to the sides to move in towards its center and' said outlet, and compel the material to pass uniformly down bottom is provided with tlie u wardly inclined extensions cg, c which progect beyond the line of the sides c2, c3 any desired extent7 be easily regulated and the degree 1 cured. Not only (see Figs. 2. and 3.)

The material to be dried and heated is fed in any desired way into the top of the chamber which is open. The chamber is usually kept filled with the material. As it is removed fromthe bottom the material gradually moves downward and in its course is brought into contact with the heated surfaces of some of the tubes, the material being caused by the arrangement of the tubes, by their sides and by their spacing to be divided or separated into narrow, thin bodies having continuity only for the height of the passages betweenon'e set of tubes, the bodies being continuously broken by each succeeding line oftubes and so that material which may be at the center of some of the passages between the tubes is caused to be brought into contact With the surfaces of othei` of the tubes in its descent. The arrangement and sides of the tubes also is such that the material passing through the chamber has no tendency to run from the one side of it to another, but on the contrary a direct, vertical descent of all the material takes place uniformly in line with that portion which is being removed from the .bottom of the shovel.

The rate' of movement of the material through the drier depends, of course, upon the rapidity with which it is discharged from the bottom, and there is thus provided a means whereby thetime used in heatin may oi? heat employed maybe controlled and variations in the degree of heat and in the degree of heating o` the material may be easily'sethis, but the' device also provides means tor keeping the material in a uniformly dry and heated condition until the time of its use and without requiring that it be in any wa treated or handled.

The drier eing rectangular in shape, and mounted as l have described and provided with discharge outlets at each side permits it to be supplied with material from either or both sides and to deliver its material at either or both sides.

The furnace B has a fire door b and any de- The grate bars sired form of grate bars b1. are arranged sufficiently below the openings in the lowest line of tubes E2 to prevent l'uel bottom, the

ser/,eos

from entering them, and the combustion chamber b2 in the upper part ofthe furnace is of sufficient height to permit the products of combustion to readily enter the passages or the three lines E, El, El of tubes.

The line D* is shown as an extension of the combustion chamber, but is separated from it by a partition oi' rire bricks el, which yrest upon the flanges (Z1 and are easily removable therefrom. g y

The furnace,l heating. chamberand fines are made of angle iron and plates which are combined to secure great strength oi construction, but are relatively light in weight. The construction is also such. as to permit the use of common Yfire brick in the furnace, its readyY placement and removal, and of common cast iron soil pipe as the heating tubes oi' the drier and their ready placement and removal.

The sides b2 and the rear end 3 ol" the furnace are made orP sheet metal plates riveted at their edges to angle iron and the sides, ends and top of the flue D are similarly constructed, the top late having the escape openings from the ue D* before referred to.

The side plates andrear plate or the fun nace are lined upon their inner surfaces with common lire brick of ordinary rectangular form and these bricks are supported upon4 iianges of angle iron along the lower edge of the plates and are attached to the side plates and to the rear plate by means or bolts with cast iron washers to bear against thefbricks and which pass through the'bricks at their corners and through holes in the plates and receive fastening nuts u on the outer suri` aces of the lates. The olts preferably are lplaced at' tliie meeting points or corners or tour bricks and this permits one bolt to act to partially attach four bricks to a plate. lt is not necessary that a bolt be locatedat each of the four corners as every other one will answer, especially when alternated as represented in the drawings. By this construe tion any type of brick which will answer for a lining and which is rectangular in form` ma be used, either originally or for repairs an any burned out bricks may be readily removed and new ones substituted by simply detaching one or more or the bolts and without removing the entire lining and without requiring special types of lining.

The top or' the furnace is formed of rectangular 'fire 'bricks b4 wliich are supported on the-flanges b5 of angle iron, extending across the furnace top from side to side, the brick being cemented in place by fire clay or cement. They are uncovered and are thus in an accessible position Jfor placement and renewal. It is not necessary to indicate specifically the ositionA or each of the angle irons and metal) plates ol' the structure, it

f being sui'licient to say that the angle irons are placed at the edges and corners wherever it seneca is necessary to reinforce or strengthen the structure and that the plates are riveted to these angle irons.

The tubes preferably are of common cast iron soil pipe having at one end a ball-shaped enlargement e around which is a collar or bead c1 adjacent to the opening ot the tube and having at the other end the cylindrical enlargement e2. This is the ordinary structure ol this ty of ipe, and the drier is made oi' a suhpceient ength toreceive the commercial length of such pipe. ln order that they may be easily placed or inserted and detached I have arranged at each end of the drying chamber the plates F and F1. The sectional plate-F forms the partition between the furnace, combustion chamber and ilue El and the drying chamber and receiving space beneath it. rllhe plate F1 forms the artition between the drying lhamber an the front flue D and also the front end of the receiving chamber. The sectional plate F is made to receive the beads or collars el of the tubes and also to support these ends of the tubes, the plate having a collar f for each tube rovided with inward extending Ilanges f, 2, the iirs't of which closes behind the bead ell and the second in front of it, and each collar thus serves to support the end of a ipe and also to prevent it from being dislo ged by endwise movement. The sections of the plate are of such shape that the division between them extends horizontally through each line of tubeholding collars. In the structure shown there are'live lines of tubes and the sectional plate is made in six sections7 each of which sections is independently bolted by the bolts f3 to flanges of angle iron located to receive them.

It will be understood that the lowermost section of the sectional plates operates as a support for the roar ends of the lowest line of tubes; that the next late in order operates with the first to holil the ends in place and also acts as a support for the rear end of the second line of tubes, and that the third, fourth and filth sections` of the late have similar 'functions in conjunction with the second, third and Jfourth lines of tubes, while the upper section serves to cooperate with the lil'th section to hold lthe upper line of tubes.

The sectional plate F forms the front wall oi the furnace and combustion chamber and it preferably is made of cast iron and because of its sectional shape, portions thcreoic which arev burned out mayi be removed and others substituted without requiring the loss of the entire plate. It will be understood that the sections of the )late so join along their edges as to provide lor a continuous wall to the furnace and`combustion chamber between them and the drying chamber and between the lue D1 and the drying chan'iber.

plate F and the ends oit the tubes supported by this plate are free to move crosswise it as the tubes are longitudinally expanded by vay,

riations in tem erature.

rThe rear ax e Al is attached to the rear lower corner of the furnace box by means of straps @surrounding the axle and riveted to the end and bottom. oi the furnace box. The axle is also bolted or rive-ted to the straps. The forward axle it supports a hing-pin al and the section ot the filth wheel. rlhe section a ot the iitth wheel, mounted upon the section a2 is riveted or bolted to the arms a4 which are riveted to angle irons forming a part of the vframe ot the machine. These arms are bent as represented and the hingpin asses through noles in the sections of the lilith wheel and also through a block a5 on the upper section. A collar a@ 'last to the king-pin is contained in a recess a7 between the two sections of the titth wheel. The advantages of the construction and the operation oi' the device have been described in conjunction with the description of the objects of the invention and its con; struction.

lt will be understood, olf course, 'that usually a soft coal is employed in the furnace, but whatever 'fuel is used the products ot combustion pass forward 'from the furnace through the lower set ci tubes into the lon ward flue, then upward in the flue and backward to the passages of the upper sots of tubes to the rear flue U1 `from which they escape into the atmosphere. This provides the drier with a relatively large number of rows of heating tubes'passing through it trom end to end7 arranged to o crate as above described and which -lorm a arge number of independent heating surfaces for the purposes specified with which the material to be dried andvv heated is brought into contact it moves downward through the chamber.

A structure of this hind is especially well adapted tor use in drying and heating material lor the manufacture of pavements and also to resist the hard usage to which such devices are ut.

Having thlus fully described my invention, l claim and desire to secure by Letters Patent of the United States:-

1. In a drier and heater for drying and heating pavement and other material, a recegotacle having an opening through which the material is fed to it, an outlet at its bottom through which said material is discharged, a furnace located at one end of said l receptacle, llucs extending from said furnace ceptacle having an openin through which' material is fed to it, an out et atits bottom through which it is discharged, a number of lines of heating tubes extending across the receptacle from end to end and with which ltubes the material comes into contact as it moves from the top to .the bottom of the receptacle, a platform below the outlet for receiving and holding the material as it leaves the outlet, and shelves extending from said platform outward on each side of the receptacle andA a furnace at one end of said recepf taclewhereby it will not interfere with the downward passage of the material through said receptacle. i

3. In a drier and heater for drying and heating pavement and other material, a receptacle through which the material is fed having its sides inclined inward to a'discharge outlet, a platform located below said discharge outlet and shelves upwardly in- -clined extending from said platform on each side. i l i 4. In a drier and heater for drying and heatin pavement' and other material, a receptac e having an opening through which the material is fed to 1t, an outlet at its bottom through which it is discharged, a number of lines of heating tubes extending across the receptacle from end to vend, arranged to`form vertical serpentine passages, and with which tubes'the material comes into contact as it extending from the platform on cach side, a furnace at the rear of the receptacle having a combustion chamber' connecting with a number of tubes, a flue at the forward endv of the receptacle connecting the passages in the tubes extending from the combustion chamber with the'passages in the tubes extending fromsaid flue to arear flue, an axle attached tothe rear of the furnace, and another axle attached to the forward end ofthe receptacle having a pivoted relation thereto.

.5. A portable drier and heater for drying and heating pavement and other material comprising a receptacle and a furnace formed of metal plates and angle iron frames and disposed lwith respect to each other to provide a receptacle having an opening at its top through which material is fed to it andan outlet narrower than the opening at its bottom through which it is discharged, a Hue at the forward end of said receptacle, a furnace, combustion chamber and ilue at'the rear of said receptacle, tubes connecting the combustion chamber and iiue above it with the forward flue, which tubes extend across the receptacle from end to end, a platform below the discharge outlet of t e receptacle, shelves extending from each end thereof and axles upon which the .said drier and heater 'ismounted HoRAoE w. Asn.

In presence of- 'ROBERT E. BREWER, MARTIN V. FOLEY. 

